/*
 * Copyright (c) 1997, 1999, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */
package org.omg.CORBA.portable;

import org.omg.CORBA.TypeCode;

/**
 * The base class for the Holder classess of all complex
 * IDL types. The ORB treats all generated Holders as Streamable to invoke
 * the methods for marshalling and unmarshalling.
 *
 * @since JDK1.2
 */

public interface Streamable {

  /**
   * Reads data from <code>istream</code> and initalizes the
   * <code>value</code> field of the Holder with the unmarshalled data.
   *
   * @param istream the InputStream that represents the CDR data from the wire.
   */
  void _read(InputStream istream);

  /**
   * Marshals to <code>ostream</code> the value in the
   * <code>value</code> field of the Holder.
   *
   * @param ostream the CDR OutputStream
   */
  void _write(OutputStream ostream);

  /**
   * Retrieves the <code>TypeCode</code> object corresponding to the value
   * in the <code>value</code> field of the Holder.
   *
   * @return the <code>TypeCode</code> object for the value held in the holder
   */
  TypeCode _type();
}
